Farm-tractor.



C. W. HULL. FARM TRACTOR.

APPLICATION FILBD'PR.6, 1912. 1,122,984.

Patented Dee. 29, 1914.

2 SHEETS-SHEET l.

@Hernani C. W. HULL. FARM TRACTOR. APPLICATION P ILED Alma, 1912.

1,122,934. Patente Dec. 29, 1914.

figes CHARLES W. HULL, 0F WHEELER, WASHINGTON.

FARM-TRACTOR.

Specification of Letters Patent.

' Patented Dee. 29, 1914.

Application led April 6, 1912. Serial No. 689,018.

To 'all 107mm it mag/concern:

Be it known that l, CHARLES lV. HULL, a Citizen of the United States, residing at lVheeler, in the county of Grant and State of lVashington, have invented new and useful Improvements in Farmrllractors, of which the following is a specification.

rl`his invention relates to farm tractors for operating plows and for other like purposes, and it has for its object to produce a me.- chine of this class which shall be simple in constructionand eificient in operation.

ln the drawing'flligure 1 is a top plan .view of -a machine constructed in accordance with the invention. Fig. 2 is a side elevation.y Fig. 3 is a transverse vertical sectional view taken on line 3--3 in Fig. 1. Fig. 4 is a sectional detail View.

Corresponding parts in the several ligures are denoted by likecharacters'of reference.

The frame structure machine is provided with a platform` 1- on.-

{vhich an engine or motor B of any suitable type is supported. The motor has'a driven shaft 2 provided with a pinion 3 meshing with a spur wheel 4` on a shaft 5 carrying a pinion 6 which is connectedtherewith by a friction clutch `7 so as to. rotate with the shaft when the latter is rotated in one direction. rl`he pinion 6 meshes with a spur wheel 8 on a counter shaft 9 which carries also va pinion 10. The pinion 10 serves to transmit motion through a dierential gear 11 to the shafts 12 and 13 which are provided with sprocket wheels i4, 15 from which motion is transmitted by chains or link belts 16, 17 to sprocket wheels-18, 19 on the wheel carrying shafts or axles 20, 21 which are supported in axial alinement in suitable bearings on the frame. Each of the shafts or axle members 20, 21 is divided about midway .of its lengthand is equipped with ya differential gear 22, thereby driving the transporting and propulsion wheels 23 at diHerential speed for convenience in turning the machine. The transporting and propulsion wheels are made of considerable width and are provided with radially extending earth engaging grouts 24 placed diagonally there-- on and serving n ot 'only to insure'the effec-fA tive populsion of the machine, but also to` cut and pack the sub-soil,

N A shaft 25 which is supported transversely of the frame structure A. carries a swinging frame apen which the earth engaging de* vices of the machine are mounted. Said v reception of seed.- of the improved frame 26 supports a shaft 27 which receives motion through a chain or link belt 28'from a sprocket 29 on the shaft 25, said sprocket 29 beingvassociated with another sprocket wheel 30Which receives motion by, a chain 31 from a sprocket wheel 32 on a shaft 33 which is connected by intermeshing gears 34, 35 with the shaft 9 from which is receives motion, said motion being transmitted by (he means just described to the shaft 27. The latter carries a plurality of castings 36 having radially extending arms or spokes 37 with flat faces 38 on which plates 39 are mounted, said plates being provided at in-V tervals with earth engaging blades 40 which, .when the shaft'27 is in motion and the machine is moving over the field, will be adapted to engage the soil, loosening, breaking and agitating the same to prepare it for the The swinging frame 26 is provided at the corners adjacent to the free edge thereof (with upwardly extending rack barge 41 which Aare guided-in engagement withpinions 42 on a-shaft 43, said shaft having a' worm gear 44 meshingwith a ysuitably supported worm 45-with which is associated a 'crank 46,

whereby it may be manipulated for the purpose of turning the worm carrying shaft 43, thereby raising or lowering the free end of the frame 26 and effecting vertical adjust- .ment of the earth engaging elements carried by said frame. In this simple manner the earth engaging elements may be thrown into or out of earth 'engaging position and may be set to engage the earth at the requisite depth or may be supported for transportation above and out of engagement with the surface of the soil.

For the purpose of steering the improved machine, a steering wheel 47 vis provided, the same being supported by means of a turn table 48 including a circumferential toothed wheel 49 which is in imesh with a pinion 50 on, a shaft 51 having a Worm gear 52 meshing with a worm 53 on one end of a shaft 54 carrying at its other end a bevel pinior 55 meshing with opposed bevel gears 56, 56 which are loosely mounted on the shaft 5, said shaft' carrying also a clutch member 57 which is slidably supported between the bevel gears 56, 56', either of which may be engaged by s aid clutch member for the purpose of connecting it for rotation with the shaft 5, as will be readily understood. .By placing the clutch member 5'( in a position intermediate the bevel gears 56, 56 and out will be readily seen that the turn table carrying the steering wheel 4may be turned in either'direction by the mechanism just described, thus enabling the machine to be conveniently steered. W hen the machine moves in the proper direction, the clutch member 57 is placed in a non-engaging position with reference to the bevel gears 56, 56 which will thus remain idle.

From the foregoing description, taken in connection with the ldrawings hereto annexed, the operation and advantages of this invention will be readily understood by those skilled in the art to which it appertains.

The construction ot the improved machine is simple and inexpensive, and'it will be found thoroughly efficient for the purposes for which it is provided.

Having thus described .the invention, what is claimed as new, is

A farm tractor comprising a frame structure of rectangular shape provided at its' forward -end with bearingsi'or twoalining axle members, two axle members supported and associated with the differential gears, a

turn table supported on the rearward part of the frame structure, a ground engaging steering wheel carried by the turn table, up-

rights rising from the frame, a second frame.

supported byA said uprights above the tirst mentioned frame, said superposed frame having a platform and a motor supported thereon, means for transmitting motion from the motor to the turn table carrying the steering Wheel, means for controlling said transmission means, and means for transmitting motion from the motor to the axle members carrying the transportin wheels including a train of gears," a di erential gear, shafts associated with, and driven by said diiierential gear, and chains transmitting motion from the last mentioned shafts to the axle members. Y

ln testimony-'whereof I atlix my signature in presence of two witnesses.

' CHARLES W. HULL.

Witnesses: i f

D. R. PARLETTE, MYRTLE L. HULL. 

